Waterproof boat decking, flashing, and method of forming same



Feb 2, 1932. L. 5. CASE 1,843,107

WATERPROOF BOAT DECKING, FLASHING, ANDMETHOD OF FORMING SAME Filed Jan. 18, 1930 INVEN TOR.

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Patented Feb. 2, 1932 tan? PA ENT- orrica LELAND S. CASE, OF SAN FRANCISCO, CALIFORNIA 'WfiTERPRBOF BOAT DECKING, FLASHING, AND METHOD 0F EGRMING- SAME Application filed January 18,, 1980. Serial No. 421300.

My invention relates to im movements in waterproof boat decking, flashing and method of forming same, and it consists in the COlIlbinations, constructions and arrangements hereinafter described and claimed.

My invention relates particularly to waterproofing the decks of boats. The decks are covered with sheet material having viscous solid characteristics and the sheets are cemented to a sub-structure.

An object ofmy'invention is to provide a waterproof boat decking having a fiashing which will effectively prevent the entrance of moisture beneath a sheet material paving of the class described. 1

Another object of my invention is to provide a flashing which is adaptable for use in any corner of such a paving and which requires no especial preparation of the wall surface.

Still another object of my invention is to provide a waterproof decking that can be applied to wood or metal decks.

Other objects and advantages will appear as the specification proceeds, and the novel features of the device will be particularly pointed out in the claims hereto annexed.

My inventionis illustrated in the accompanying drawings, in which:

Figure l is a perspective View of a portion of a boat decking and also shows a corner flashed in accordance with my invention, and

Figure 2 is a vertical section through Figure 1.

In carrying out my invention, 1 provide a sheet of material 6 which forms the surface or upper layer of the decking. This material comprises a fabric base impregnated with a bituminous or. asphaltic substance. Such a sheet of material is rather stiff, and has viscous solid characteristics, i. e. although it may be conformed to a surface by long continued pressure, it is liable to be cracked when bent sharply or suddenly. The sheet is laid upon a substructure 7, and is separated from this substructure by a like sheet of material 8. Thetwo similar sheets of materal are so arranged that the abutting edges of the upper sheets are staggered with respect to the abutting edges of the lower strip. This provides a waterproof decking.

The layer 8 is first disposed in place and its edge abuts the upwardly extending wall 12. Before laying the layer 6, a fillet or cove 9, preferably a fairly hard asphaltum compound, is formed while cold, in the corner to be flashed with a round pointed trowel. An extending portion 11 of the fillet projects upwardly along the wall 12 slightly higher than it is intended to carry the sheet material 6.

The sheet 6 is laid upon the sheet 8 and cemented. The edge of the sheet 6 terminates slightly below the top of the portion 11. The sheet 8 is cemented to the substructure 7 and the sheet 6 is cemented to the sheet 8 and the fillet 9. The edge of the sheet 6 is preheated preferably by means of a blow torch, which renders the portion adjacent to the edge flexible for rounding the sheet to conform with the fillet. The blow torch also partially melts the lower surface coating of the sheet 6 at the edge so that it will coalesce with the material of the fillet 9. While sheet 6 is still warm, it moulding 13 is secured in place. in the corner by means of nails 14: or

other suitable fastening means. The moulding 13 forces the sheet 6 against the fillet 9, conforming it to the fillet and causing it to coalesce or weld to the fillet to form a permanently waterproof joint. The upper edge of the fillet 9 extending above the edge of the sheet 6 tends to flow down over the latter and render the flashing still more secure.

If the upper deck of the boat has been painted or has been covered with canvas, this is removed and then the sheet 8 is cemented to the deck by a cold bituminous, vegetableor animal cement. it is immaterial whether the sub-structure 7 is wood or metal, the same covering is provided and aifords a waterproof decking.

The sheets 6 and 8 may he. a bituminous saturated and coated asbestos felt or rag felt. The fillet 9 may be. made of asphalt, asbestos fibre and lime rock held in a plastic state by fiuxing oil.

The nails 14 are driven into the wall 12 and only puncture the portion of the sheet 8 disposed along the wall 12. The principal point of the invention is to waterproof the deck so as to prevent water from seeping beneath the deck covering and rusting away the steel structure.

Althou h I have shown and described one embodiment of my invention, it is to be understood that the same is susceptible of various changes, and I reserve the right to employ such changes as may come within the scope of the invention as claimed. I

I claim:

'1. In a flashing for corners, a plastic bituminous fillet, a sheet of covering material, a portion of the sheet material overlying said fillet and being coalesced therewith, and pressure applying means arranged on said sheet material and over said fillet.

2. In a flashing for corners, a plastic fillet, a sheet of covering material, a portion of the sheet material overlying said fillet and being coalesced therewith, and pressure applying means arranged on said sheet material and over said fillet. y

3. In a water-tight flashing construction, a plastic bituminous fillet, a sheet cemented to a supporting surface by a cold bituminous cement, a POItlOl'l of the sheet material over-- lying said fillet and being coalesced therewith, and pressure applying means arranged on said sheet material and overlying said fillet. a

4. In a water-tight fiashingconstructiorn a plastic bituminous fillet, a sheet cemented to a supporting surface by a cold bituminous cement, aportion of the sheet material overcomprising a plastic bituminous compound fillet placed at the juncture of the deck and cement and fillet remaining in a plastic state indefinitely, whereb relative movement is permitted betweent e sheet, the deck, wall, and fillet, and a moulding covering the. portion of sheet overlying the fillet.

- 10. A waterproof boat decking comprising a sheet saturated and coated with a bituminous material having viscous solid characteristics and being cemented b a bituminous cement to a supporting sur ace, the cement remaining in a plastic state indefinitely.

Y LELAND S. CASE.-

lying said fillet and being coalesced therewith, and moulding arranged on said sheetmaterial and overlying said fillet.

5. A corner flashing comprising a sheet having) viscous solid characteristics, said sheet eing cemented to a supporting surface and having its edge termmating at the corner, a fillet having portions extending along the vertical, wall of the corner and over the sheet, a second sheet placed on the first and having a portion conforming to the shape of the fillet, and a moulding holding the second sheet in place.

5. A waterproof ship deck covering comprising a sheet saturated and coated with a bituminous material having viscous solid characteristics, the sheet being cemented to a shlp deck with cold bituminous material, and a second sheet similar in structure cemented in a similar manner on the first sheet.

7. A waterproof boat decking comprising a sheet saturated and coated with a bitumi- A nous material having viscous solid characteristics and being cemented by a cold bituminous cement to a supporting surface, the cement remaining in a plastic state indefinitely and permlttmg a slight lateral movement between the sheet and the supporting surface.

8. A waterproofboat decking and flashing 

